Color Black Material Plastic, Stone Item weight 400 Grams Item dimensions L x W x H 15.5 x 13.5 x 5.5 centimeters About this item 3 working modes: The solar air pump kit has 3 different modes: high speed, low speed, slow speed (10 seconds On / Off) Energy saving: the air bubble pump absorbs sunlight and transfers solar energy into electricity by panel, environmentally friendly. USB charging: not only can be powered by solar energy, it can also be charged by USB, for bad weather without sunshine. Compact and portable: compact size and light weight, easy to carry, especially for outdoor activities such as fishing. Scopes of application: Widely used to add oxygen to various aquariums, fish tanks, basins, ponds.